EP 0968955 A2 20000105 - Composite material jib
Title (en)
Composite material jib
Title (de)
Ausleger aus Verbundwerkstoff
Title (fr)
Flèche de matériau composite
Publication
Application
Priority
DE 19829829 A 19980703
Abstract (en)
At least one section (10) of a jib of a crane, such as a mobile crane, includes a composite cross-section incorporating a layer of steel (11) covered by one or more fiber composite layers (12,13). In a preferred embodiment, more than one fiber composite layer (12,13) is included and the respective fiber layers (12,13) are disposed in a crisscross manner with respect to each other to enhance the overall strength of the telescopic part (10). Also, in a preferred embodiment the steel layer (11) of the composite is on the interior of the telescopic part (10) for minimizing thermal stresses due to temperature changes caused by sun loads. In another preferred embodiment, the composite fiber layers (12,13) are disposed only in the zone of the cross-section of the telescopic part (10), which is subjected to tensile forces during use. <IMAGE>
IPC 1-7
IPC 8 full level
B29C 67/24 (2006.01); B66C 23/687 (2006.01); B66C 23/697 (2006.01); B66C 23/70 (2006.01)
CPC (source: EP US)
B66C 23/701 (2013.01 - EP US); Y10T 428/249942 (2015.04 - EP US); Y10T 428/249951 (2015.04 - EP US); Y10T 442/3415 (2015.04 - EP US); Y10T 442/656 (2015.04 - EP US)
Citation (applicant)
EP 0117774 A1 19840905 - CREUSOT LOIRE [FR]
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
EP 0968955 A2 20000105; EP 0968955 A3 20001206; EP 0968955 B1 20040225; CA 2276925 A1 20000103; CA 2276925 C 20080226; DE 19829829 A1 20000113; DE 69914974 D1 20040401; DE 69914974 T2 20040812; ES 2215344 T3 20041001; JP 2000191281 A 20000711; JP 3214844 B2 20011002; US 6586084 B1 20030701
DOCDB simple family (application)
EP 99112763 A 19990701; CA 2276925 A 19990702; DE 19829829 A 19980703; DE 69914974 T 19990701; ES 99112763 T 19990701; JP 18906599 A 19990702; US 34750999 A 19990702